Styrene acrylonitrile copolymer (as) is a kind of general-purpose styrene resin. Glass fiber reinforced styrene acrylonitrile copolymer has been widely used in household electrical field due to its outstanding processing function, dimensional stability and mechanical strength.
Compared with single screw extruder, co rotating twin-screw extruder has the advantages of simple feeding, short residence time of materials in the extruder, excellent mixing and plasticizing effects, good exhaust function, low specific power consumption and high volume power. Therefore, it is widely used in modified blending, filling, glass fiber reinforcement and reflective extrusion of polymers. The screw elements of the co rotating twin-screw extruder are designed in combination, which is arranged and assembled in an orderly manner by various types and lengths of screw elements. Therefore, the corresponding screw combination can be selected according to the difference of processing materials and processing technology, so as to change the residence time and shear stress of animal materials in the extruder, so as to make the processed data and processing technology different, The suitable screw combination was selected to improve the residence time and shear stress of animal material in the extruder, so that the processed data can reach the best induction function. It is difficult to optimize the screw components of co rotating twin-screw extruder. The influence of screw combination on mechanical function of glass fiber reinforced as was analyzed.

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